Effect of diuresis on bother related to lower urinary tract symptoms

Aims: To explore and objectify the impact of diuresis on the presence of daytime and nighttime LUTS, and associated bother. Methods: Participants (healthy volunteers and patients referred to our hospital for a urologic consultation) were asked to complete a 72-hour bladder diary and also had to fill in a Likert scale (0: no bother; 10: maximal bother) to evaluate the LUTS-associated bother during daytime and nighttime. Three groups were defined: no/mild bother (Bother ≤2), moderate bother (3 ≤ Bother ≤ 6), and strong bother (Bother ≥7). Questionnaires in order to assess LUTS (ICIQ MLUTS and ICIQ FLUTS), quality of life (SF-36, NqOL), and quality of sleep (PSQI) were completed. Results: During daytime and nighttime, the study of participants with a strong bother associated with LUTS revealed a statistically significant higher fluid intake than those without bother (1640 mL vs 1800 mL during daytime, P = 0.007). Also, those with higher diuresis rate had more bother related to LUTS than the others (71.3 mL/h in group 1 vs 87.3 mL/h in group 3 (P < 0.001) during daytime). As might be expected, lower urinary tract such as bladder, for example, studied through maximal voided volume does play a role. The lower the maximal voided volume is, the more bother the participants described. Conclusions: This study pointed out the implication of diuresis in bother related to LUTS. Our findings showed that there was an increase in bother by 1 when diuresis increased by 100 mL/h.